docs: def registered_vendor_ids():
    """Get a list of vendor IDs from Microsoft's website."""
    from bs4 import BeautifulSoup
    from pkg_resources import resource_filename
  
    registered_vendor_ids = {}
    CACHED = resource_filename('fontbakery',
                               'data/fontbakery-microsoft-vendorlist.cache')
    content = open(CACHED, encoding='utf-8').read()
    soup = BeautifulSoup(content, 'html.parser')
  
    IDs = [chr(c + ord('a')) for c in range(ord('z') - ord('a') + 1)]
    IDs.append("0-9-")
  
    for section_id in IDs:
      section = soup.find('h2', {'id': section_id})
      table = section.find_next_sibling('table')
      if not table: continue
  
      #print ("table: '{}'".format(table))
      for row in table.findAll('tr'):
        #print("ROW: '{}'".format(row))
        cells = row.findAll('td')
        # pad the code to make sure it is a 4 char string,
        # otherwise eg "CF  " will not be matched to "CF"
        code = cells[0].string.strip()
        code = code + (4 - len(code)) * ' '
        labels = [label for label in cells[1].stripped_strings]
        registered_vendor_ids[code] = labels[0]
  
    return registered_vendor_ids